Spooling machine



$ept. 25, 1 934. M P, DURAND SPOOLING MACHINE Filed June 29, 1932 IInventor 02474225651 Patented Sept. 25 1934 UNIT-ED.

, sroc'mm MACHINE Marcel Pittman; st." detail; "Entay,

T f cefi" j, f Application June 29, 1932, .Serial No. 620,034 In GermanySeptember 18,1931 1 3 Claims. (01.242-48) In spooling machines ordevices with split drums of the known kind the thread is subjected to avery great lateral friction, owing to the thread entering or leaving thedrum almost radially. This excessive friction of the thread hinders theusage of this kind of machine for fragile threads.

The present invention consists of a spooling machine with a split drum,an internal cross- 0? bar thread-guide open laterally and placed so thatthe thread passes under it between its point of entering and its pointof leaving the drum,

while following an approximately rectilinear path. This arrangementallows a considerable reduction in the distance between the point ofentering and the point of leaving of the thread, while it leavessensibly in a plane parallel to the axis of the drum, the thread isdiverted only over a short distance, and its strain is reduced to such adegree that one may use the device for delicate fibres or combinationsof threads.

Moreover, the thread being guided in the slit by the internal cross-bar,its tension may be limited to the minimum necessary for winding,

:this further contributing to reduce the strain in the thread.

Also, the device while not using any member with a reciprocating motion,allows one to effect crossed windings at the highest speed having regardto the resistance of the thread.

The interior cross-bar of the device of the present invention may beplaced preferably very near to the inner face of the drum; to do this itis made to bear on the axle of the drum. If

.this axle turns it may be fixed on a sleeve on this axle and be heldfor instance merely by the tension of the thread (an obviouslyunreliable means, not recommended), or by gravity, by magnetic force ormechanically. If the axle of the drum is fixed, the cross-bar may befirmly fixed thereto, but in this case the two portions of the revolvingdrum would have to be kept in exact synchronism.

The drum of the invention has in addition a lateral slit opening at theside and allowing the 45 thread to be passed easily under the cross-barin such a way that the end of the thread does not leave the hand of theoperator.

The adjoined drawing shows, by way of example, some practicalarrangements of the device. Fig. 1 shows a section of part of the drumand the path of the thread, Fig. 2 shows in perspective a device forallowing the thread to be passed under the cross-bar without the end 5.1 leaving the hand, and Figs. 3 to 6 show in longitudinal sectionsthrough ab--c of Fig. 1 different ways for holding the interiorcross-bar.

In these figures, the same numbers indicate the same parts; 1-1' are thetwo parts of the split drum; 2 is the inside cross-bar, 3 the thread,4-4 the wound bobbin, 5 the slit in the drum; 6 the slit for introducingthe thread, and '7 the lateral hole appertaining to this slit. Thethread to be wound enters the slit 5 at 11, passes under the bar 2 andleaves at e a point which, as can be seen in Fig. 1, is very near to thepoint of rolling up, ff', on the bobbin 4-4. In order to pass the thread3 under the cross-bar 2, the operator brings the slit 6 in front of thecross-bar Fig. 2, passes the thread into the slit 6 and the hole 7, thenslightly turning the drum in the direction g so as to lead the slit 6behind the cross-bar as shown in broken lines; at this moment, it isonly necessary to raise the thread while causing it to pass by the slit6, and it is found to have passed under the cross-bar without the endhaving left the hand for a moment. In Figs. 3 and 4 the two portions 11'of the revolving drum are fixed on the axle 8 on which is looselymounted the sleeve 9 carrying the bar 2.

As explained above, this cross-bar may be held in place by the tensionof the thread but this is not recommended. It is preferable to hold thecrossbar by means of a counterweight 10 (shown in Fig. 3) or by amagnetic bar 11 held by the flux of a magnet 12, Fig. 4; or again (Fig.5) by a gear 13 meshing with a pinion 14 in sun and planet fashion, saidpinion 14 being connected to a like pinion 14 meshing in its turn withthe external gear 13 rigid with the fixed part. In Fig. 6, the axle 8 isfixed and the sleeve 9 is fixed on it as are also the collets 15 and 15.Between these three members the parts 1-1 of the split drum turn freelyon the axle 8, so they do not touch at any time during their rotation,this being assured or regulated by an auxiliary axle 16 of which the twopinions 1717 mesh with the toothed crown wheels 18-18 fixed respectivelyto 1 and 1. The bearing 19 is situated two cylindrical members spacedapart by a continuous oblique main slit and an internal guide bar freeat one end, under which the thread passes between the points of enteringand leaving the drum, said drum having a laterally extendingsupplemental slit communicating with the main slit and the drum havingan opening in one end communicating with the supplemental slit, andformed and adapted to allow of the passage of the thread into and out ofthe drum and under the guide bar, while fed by the hands of theoperator.

2. A bobbin winder comprising a split drum composed of two rotarycylindrical members spaced apart by a continuous oblique main slit, andan interior fixed guide bar, substantially flattened, and located aheadof the bobbin and at a minimum distance from the inner surface of thedrum, the points of thread entry to the drum and exit therefrom beinglocated in a plane substantially in alignment with the inner surface ofthe guide bar, and tangential to the under surface of the bobbin,whereby the thread is fed through the inlet and the outlet passage tothe bobbin in a substantially straight line, to the undermost surface ofthe bobbin.

3. A split drum for bobbin Winders comprising two rotary cylindricalmembers spaced apart by a continuous oblique main slit, and an internalflattened guide bar placed in front of the bobbin and lying close to theinner surface of the drum so that the thread passing under said bar maybe retained in the main slit without entering deeply into the drum; thepoints of the thread entry and departure from the drum being on a linesubstantially tangential to the undermost surface of the bobbin.

MARCEL PAUL DURAND.

